The defense system is arranged in such a way that soon it will start resisting to the reduction of the calorie intake, resulting in a refusal to accept the plan over the course of the following days. Persons deciding to lose weight should be ready to show patience and perseverance for a long time, with the leading role to be played by the mind, not by emotions.
If someone has decided to lose weight, he/she should reduce the energy value of the diet very gradually. The maximal possible reduction of the caloric intake per day is about 10%. During the diet, fatty foods and sweets have to be excluded first, follow by the rest of the products.